CN1697282A - Power source device and charge controlling method to be used in same - Google Patents
Power source device and charge controlling method to be used in same Download PDFInfo
- Publication number
- CN1697282A CN1697282A CNA2005100728698A CN200510072869A CN1697282A CN 1697282 A CN1697282 A CN 1697282A CN A2005100728698 A CNA2005100728698 A CN A2005100728698A CN 200510072869 A CN200510072869 A CN 200510072869A CN 1697282 A CN1697282 A CN 1697282A
- Authority
- CN
- China
- Prior art keywords
- voltage
- mentioned
- charging
- power storage
- electrical power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 9
- 238000007600 charging Methods 0.000 claims abstract description 237
- 239000003990 capacitor Substances 0.000 claims abstract description 89
- 230000009471 action Effects 0.000 claims description 59
- 238000003860 storage Methods 0.000 claims description 54
- 238000012360 testing method Methods 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 19
- 230000008520 organization Effects 0.000 claims description 10
- 230000000052 comparative effect Effects 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 description 66
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 60
- 230000015572 biosynthetic process Effects 0.000 description 12
- 238000005755 formation reaction Methods 0.000 description 12
- 230000008859 change Effects 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 150000002641 lithium Chemical class 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000010277 constant-current charging Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000005486 organic electrolyte Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/38—Energy storage means, e.g. batteries, structurally associated with PV modules
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S136/00—Batteries: thermoelectric and photoelectric
- Y10S136/291—Applications
- Y10S136/293—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Dc-Dc Converters (AREA)
- Control Of Electrical Variables (AREA)
Abstract
A power source device is provided which is capable of charging a secondary cell in a stable manner even in an environment in which power generated by a solar cell varies due to changes in sunlight intensity and/or ambient temperatures. By power generated by a solar cell module, an electric double-layer capacitor is charged and, by using a charging voltage of the electric double-layer capacitor, a booster-type DC-DC (Direct Current-Direct Current) converter is driven. A charge on/off controlling circuit detects the voltage of the electric double-layer capacitor and, when the voltage exceeds a high level threshold voltage, keeps a charge controlling signal (output signal from a terminal) in an active mode and performs a charge starting operation and, after that, when the voltage of the electric double-layer capacitor reaches a low level threshold value, holds the charge controlling signal in a non-active mode and performs a charge stopping operation.
Description
Technical field
The present invention relates to employed control method in a kind of supply unit and this supply unit, the electric power that solar cell produced is temporarily stored in the double-layer capacitor, have the secondary cell that charges according to this stored electric power, be suitable for supply unit and this supply unit employed control method of use in the incomplete place of for example power infrastructures (infrastructure) etc.
Background technology
Supply unit with secondary cell that the solar cell by the foundation solar power generation charges, power supply as e-machine etc. in incomplete place of power infrastructures and area uses, but exist because the variation of environment such as intensity of sunshine and environment temperature, and make unstable this problem of this solar cell electricity.Therefore, the someone has proposed to have improved the scheme of the supply unit of this problem.
In the past, as this technology, the device described in for example following document was arranged.
In the supply unit described in the patent documentation 1, diode array in parallel with solar cell and Electric double-layer capacitor, as to produce the reference voltage of using the operating point that decides this solar cell, by by thermal, making reference voltage value consistent with the temperature characterisitic of solar cell with this solar cell fluid-tight engagement.Like this, the operating point of solar cell becomes the best operating point that can access maximal efficiency, one side is to the variation of the best operating point that variations in temperature produced of this solar cell, corrective action point one by one, by switching mechanism and constant current DC (direct current)/DC converter carry out the charging of battery on one side.
Patent documentation 1: the spy open the 2002-238182 communique (the 1st page, Fig. 1).
But, in the above-mentioned supply unit in the past, have following problem.
For example, under solar cell is arranged on away from the situation in the place of supply unit, because producing the circuit of reference voltage separates with supply unit, therefore, this circuit and electric wiring between this supply unit that produces reference voltage is elongated, exists the generation noise to sneak into, and degradation under the voltage that wiring impedance produced, make the precision of reference voltage worsen, the operating point of solar cell is not the such problem of optimum value.In addition, in that solar cell and supply unit is integrated, battery is arranged under the outdoor situation, for example, under the calm in full summer high temperature environment such as state, owing to surpass the upper limit of the serviceability temperature scope of this battery, therefore, exist this battery to become the problem of precarious positions such as generating heat or break.In addition, the constant current charge value under the low temperature environment is envisioned that the reduction of the charge efficiency that increase caused of the internal driving of battery.In addition, even only battery is being arranged on indoorly, and under the very suitable situation of ambient temperature,, also be envisioned that the reduction of the charge efficiency in the constant current charge owing to connect the increase of the wiring impedance of battery and supply unit.
In addition, sooner or later or during cloudy day etc., make that owing to being in the more weak state of intensity of sunshine the solar cell electricity can be hour, because the consumed power under the inactive state of the leakage current of double-layer capacitor and the internal circuit of supply unit, charging voltage needs the long time can rise to best operating point, because the cycle that switching mechanism becomes before the conducting state is elongated, therefore exist charge efficiency to reduce this problem.
Summary of the invention
The objective of the invention is to, provide a kind of under the situation that the electric energy that solar cell produced changes with intensity of sunshine or environment temperature, can keep the device that secondary cell is stably charged.
For addressing the above problem, the present invention program one, relate to a kind of solar cell that has, with the electrical power storage portion that stores the electric power that charges by the generating of this solar cell, and the supply unit of the secondary cell that charges by stored electric power in this electrical power storage portion, it is characterized in that, be provided with: voltage detection department, it detects the voltage of above-mentioned electrical power storage portion, when this voltage becomes high-level threshold voltage when above, the charging control signal that keeps being used for to above-mentioned secondary cell charge is an effective model, charging begins action, afterwards, and when the voltage of above-mentioned electrical power storage portion becomes the low level threshold voltage, keeping above-mentioned charging control signal is invalid mode, charges with stopping action; And charging control section, when it was effective model at above-mentioned charging control signal, stored electric power charged to above-mentioned secondary cell in the above-mentioned electrical power storage of the foundation portion.
The present invention program two, relate to scheme one described supply unit, it is characterized in that above-mentioned voltage detection department has: the voltage and the above-mentioned high-level threshold voltage of above-mentioned electrical power storage portion are compared, export the 1st comparison circuit of the 1st comparative result; And the voltage and the above-mentioned low level threshold voltage of above-mentioned electrical power storage portion compared, export the 2nd comparison circuit of the 2nd comparative result; And, above-mentioned charging control signal is remained the holding circuit of above-mentioned effective model or invalid mode according to above-mentioned the 1st comparative result or above-mentioned the 2nd comparative result.
Mode three of the present invention, relate to mode one described supply unit, it is characterized in that, above-mentioned charging control section has: switching mechanism, when it is above-mentioned effective model at above-mentioned charging control signal, become conducting state, above-mentioned secondary cell is charged according to stored electric power in the above-mentioned electrical power storage portion; And the constant current charge controlling organization, it charges to above-mentioned secondary cell with given constant current in the given threshold value of the voltage ratio of above-mentioned secondary cell hour; And the constant voltage charge controlling organization, become above-mentioned given threshold value when above at the voltage of above-mentioned secondary cell, with given constant voltage above-mentioned secondary cell is charged.
Mode four of the present invention relates to mode one described supply unit, it is characterized in that, above-mentioned electrical power storage portion is made of double-layer capacitor, and this double-layer capacitor is set to, and its internal driving is lower than the internal driving of above-mentioned solar cell.
Mode five of the present invention relates to mode one described supply unit of the present invention, it is characterized in that, additional have: the auxiliary power storage part; And boost voltage test section, it detects, when above-mentioned charging control signal is above-mentioned effective model, generating by above-mentioned solar cell is charged to above-mentioned auxiliary power storage part, when the voltage of this boost voltage storage part becomes higher than above-mentioned high-level threshold voltage, the voltage that replaces above-mentioned electrical power storage portion is supplied with the voltage of above-mentioned boost voltage storage part to above-mentioned voltage detection department.
Mode six of the present invention relates to mode five described supply units of the present invention, it is characterized in that, above-mentioned electrical power storage portion is made of double-layer capacitor, and this double-layer capacitor is set to, and its internal driving is lower than the internal driving of above-mentioned solar cell.
Mode seven of the present invention, relate to a kind of control method, it is used to have solar cell, with the electrical power storage portion that stores the electric power that charges by the generating of this solar cell, and the supply unit of the secondary cell that charges by stored electric power in this electrical power storage portion, it is characterized in that: the voltage that detects above-mentioned electrical power storage portion, when this voltage becomes high-level threshold voltage when above, the charging control signal that keeps being used for to above-mentioned secondary cell charge is an effective model, charge and begin action, afterwards, when the voltage of above-mentioned electrical power storage portion becomes the low level threshold voltage, keeping above-mentioned charging control signal is invalid mode, charges with stopping action; When above-mentioned charging control signal is effective model, above-mentioned secondary cell is charged according to stored electric power in the above-mentioned electrical power storage portion.
(invention effect)
According to formation of the present invention, voltage detection department, detect the voltage of store voltages portion, when this voltage becomes high-level threshold voltage when above, the charging control signal that keeps being used for to above-mentioned secondary cell charge is an effective model, charges with beginning action, afterwards, when the voltage of above-mentioned electrical power storage portion became the low level threshold voltage, keeping above-mentioned charging control signal was invalid mode, charged with stopping action; Charging control section, when above-mentioned charging control signal is effective model, according to stored electric power in the above-mentioned electrical power storage portion above-mentioned secondary cell is charged, therefore, even under the variation of the variation of intensity of sunshine or environment temperature makes the situation of the electricity change that solar cell produced, can allow also this secondary cell is stable to charge.In addition, because the 1st and the 2nd comparison circuit of voltage detection department does not need near solar cell, therefore, can not be subjected to the influence of the environment temperature of this solar cell, can detect voltage accurately by producing high-precision high-level threshold voltage and low level threshold voltage.In addition, when the voltage of secondary cell during less than given threshold value, the constant current charge controlling organization charges to this secondary cell by given constant current, when the voltage of this secondary cell reaches this given threshold value when above, the constant voltage charge controlling organization charges to this secondary cell with given constant voltage, therefore, can not be subjected to the influence of the impedance of this secondary cell and circuit, efficiently this secondary cell be charged.In addition, detect, when above-mentioned charging control signal is above-mentioned effective model, generating by above-mentioned solar cell is charged to above-mentioned auxiliary power storage part, when the voltage of this boost voltage storage part becomes higher than above-mentioned high-level threshold voltage, replace the voltage of above-mentioned electrical power storage portion, supply with the voltage of above-mentioned boost voltage storage part to above-mentioned voltage detection department, therefore, can charge to secondary cell more efficiently.
Description of drawings
Fig. 1 is the circuit diagram of the electric formation of the supply unit of expression embodiments of the present invention 1.
Fig. 2 is the figure corresponding to the output characteristic of intensity of sunshine of expression solar cell.
Fig. 3 is the figure corresponding to the output impedance characteristic of intensity of sunshine of expression solar cell.
Fig. 4 is the figure of the temperature characterisitic of expression solar cell.
Fig. 5 is the figure of the passing of 1 day energy output in the solar cell of representing to fixedly install.
Fig. 6 starts/stops the figure of the action of control circuit 7 for the expression charging.
Fig. 7 is the figure of the true value of expression NOR type RS-FF circuit 732.
The sequential chart of the action when Fig. 8 is the charging of the lithium rechargeable battery 92 in the supply unit of presentation graphs 1.
Fig. 9 is the figure of the charge characteristic of expression lithium rechargeable battery 92.
Figure 10 is the figure of the charge characteristic of expression double-layer capacitor 5.
Figure 11 is the circuit diagram of the electric formation of the supply unit of expression embodiments of the present invention 2.
Figure 12 is the circuit diagram of the electric formation of the supply unit of expression embodiments of the present invention 3.
The sequential chart of the action of Figure 13 during for the charging of lithium rechargeable battery 92 in the supply unit of expression Figure 12.
Among the figure: 1-solar module (solar cell); 2-the 1st anti-backflow element (part of supply unit); 3-current limiting element (part of supply unit); 4-over-voltage protection element (part of supply unit); 5-double-layer capacitor (electrical power storage portion); 6-step-up DC-DC converter (part of supply unit); 7-charging starting/stop control circuit (part of voltage detection department); 71-LDO adjuster (part of voltage detection department); 72-capacitance voltage testing circuit (part of voltage detection department); 721-low-voltage detector (the 2nd comparison circuit; the part of voltage detection department); 722-high-voltage detector (the 1st comparison circuit; the part of voltage detection department); 723; 724-reference voltage source (part of voltage detection department); 73-gate pole ON-OFF control circuit (part of voltage detection department); 731-inverter (INV) circuit (part of voltage detection department); 732-NOR type RS-FF circuit (holding circuit; the part of voltage detection department); 8-secondary cell charge control circuit (charging control section); 81-charging control switch (part of charging control section); 82-gate pole switch (switching mechanism; the part of charging control section); 83-charging modes selector switch (part of charging control section); 84-constant current charge control circuit (part of constant current charge controlling organization); 85-constant voltage charge control circuit (part of constant voltage charge controlling organization); 86-the 2nd anti-backflow element (part of charging control section); 87-charging current detecting element (part of constant current charge controlling organization); 88-charging voltage detecting element (part of constant voltage charge controlling organization); 9-secondary battery (secondary cell); 91-charge-discharge protection circuit (part of secondary cell); the 92-lithium rechargeable battery; 11-main capacitance (electrical power storage portion); 12-assists electric capacity (auxiliary power storage part); 13-main capacitance over-voltage protection element (part of supply unit); 14-assists capacitance overvoltage protection element (part of supply unit); 15-main capacitance anti-backflow element (part of supply unit); 16-assists electric capacity anti-backflow element (part of supply unit); the 17-charging capacitor is selected circuit (part of boost voltage test section); 171-selector switch control circuit (part of boost voltage test section); 172-selector switch (part of boost voltage test section); 18-electric capacity charging voltage comparison circuit (part of boost voltage test section); 19-assists capacitor discharge control circuit (part of boost voltage test section); 191-discharge switch (part of boost voltage test section); 192-assists capacitance voltage testing circuit (part of boost voltage test section), 193-discharge switch control circuit (part of boost voltage test section).
Embodiment
The invention provides a kind of supply unit, detect the voltage of the double-layer capacitor that charges by the generating of solar cell, when this voltage becomes high-level threshold voltage when above, the charging control signal that keeps being used for to secondary cell charge is an effective model, charging begins action, afterwards, and when the voltage of this double-layer capacitor becomes the low level threshold voltage, keeping this charging control signal is invalid mode, charges with stopping action; When this charging control signal is effective model, above-mentioned secondary cell is charged according to electric power stored in this double-layer capacitor.
[execution mode 1]
Fig. 1 is the circuit diagram of the electric formation of the supply unit of expression embodiments of the present invention 1.
The supply unit that this is routine; as shown in Figure 1, start/stop control circuit 7, secondary cell charge control circuit 8 and secondary battery 9 and constitute by solar module the 1, the 1st anti-backflow element 2, current limiting element 3, over-voltage protection element 4, double-layer capacitor 5, step-up DC-DC converter 6, charging.Solar module 1 is formed by a plurality of solar cell connection in series-parallel, and the luminous energy of the sun is directly converted to electric energy.Especially, in the present embodiment, solar module 1, combine by formed solar battery cell on the substrate that is formed on Si semiconductor or compound semiconductor, be plane, have as shown in Figure 2 output characteristic, output impedance characteristic as shown in Figure 3 and temperature characterisitic as shown in Figure 4.
Also promptly, solar module 1, as shown in Figure 2, output current changes according to the intensity of solar light irradiation solar battery cell, and especially intensity of sunshine is strong more, and output current is big more, and along with the enhancing of intensity of sunshine, it is saturated that output voltage is tending towards.In addition, solar module 1, as shown in Figure 3, have with from the relevant output impedance characteristic of the intensity of sunshine that output characteristic derived shown in Figure 2.For example, 0.8W the output impedance of the solar module of level, even under the very strong situation of intensity of sunshine, has the output impedance about 5 Ω at least, and under the more weak situation of intensity of sunshine, having demonstrated the change of the output impedance more than 100 Ω especially, is tens of Ω levels in the output voltage of practicality.In addition, solar module 1, as shown in Figure 4, output voltage changes corresponding to the variation of the environment temperature of solar battery cell, and particularly under the condition of identical intensity of sunshine, temperature high output voltage more is low more, in addition, low output voltage is high more more for temperature.In addition, when plane solar module 1 being fixed in one direction and is arranged on ground or the building etc., as shown in Figure 5, because the rotation of the earth causes the position of the sun to change, make the intensity of solar light irradiation on solar battery cell change as time goes by, therefore, according to output characteristic as shown in Figure 2, the energy output of solar module 1 also changes as time goes by.
The 1st anti-backflow element 2, for example constitute by lower Schottky diode of forward voltage etc., in the place of dark or night etc. solar module 1 output voltage when reducing, prevent from the reverse current of back segment circuit (Electric double-layer capacitor 5) destruction solar module 1.Current limiting element 3, for example constitute by the resistance of number about Ω etc., under will be as situations as power supply such as the solar module with very high generating capacity of solar module 1 or temporary transient DC stabilization power supplys, restriction be to the impulse current of double-layer capacitor 5 and back segment circuit.Over-voltage protection element 4; for example constitute by voltage stabilizing didoe etc.; under the output voltage of solar module 1 is situation more than double-layer capacitor 5 withstand voltage; with the voltage limit that is carried on this double-layer capacitor 5 is given voltage, such characteristic degradation such as the increase of the ESR (equivalent series resistance) of this double-layer capacitor 5 that overvoltage stress caused or volumetric expansion or element is destroyed protect.
Double-layer capacitor 5, by using the hydrogen set type of dilute sulfuric acid as electrolyte, or the organic system type constitution of use organic electrolyte, be used for reducing ESR, establishing this ESR5b is resistance value Rx, and static capacity 5a is capacitance Cx, when the element area for example is the 20mm * 30mm left and right sides, have about the withstand voltage 5V of being, resistance value Rx is below the 200m Ω, and capacitance Cx is the above characteristic of 30mF.By like this, high output impedance with the tens of Ω levels of solar module 1 in practical output voltage, be transformed into the Low ESR of the following little Ω level of 1 Ω, and be equivalent to the long-pending electric weight of the charging voltage of capacitance Cx and double-layer capacitor 5 by storage, the transformation of electrical energy that solar module 1 is produced is a low impedance power.
Step-up DC-DC converter 6 is made of switching regulaor, starts/stop the power supply of LDD (the Low Drop Out) adjuster 71 of control circuit 7 as the power supply and the charging of the secondary cell control circuit 8 that charges to lithium rechargeable battery 92.In order to allow the rechargeable energy high efficiency of double-layer capacitor 5 discharge, the high step-up ratio that needs step-up DC-DC converter 6, specifically, according to reaching input voltage 3 by the high efficiency of above step-up ratio, by pulse width modulation (Pulse WidthModulation, PWM), (Pulse Frequency Modulation, PFM) and their compound mode, or synchronous rectification mode etc. is carried out boost action to pulse frequency modulated.
Control circuit 7 is started/stops in charging, is made of ldo regulator 71, capacitance voltage testing circuit 72 and gate pole ON-OFF control circuit 73.Ldo regulator 71 is to be used for providing the voltage-dropping type power circuit of power supply to capacitance voltage testing circuit 72 and gate pole ON-OFF control circuit 73.Capacitance voltage testing circuit 72 is made of low-voltage detector 721, high-voltage detector 722, reference voltage source 723 and reference voltage source 724.Low-voltage detector 721, by reference voltage source 723 set threshold voltage VL (low level threshold voltage), as shown in Figure 6, under the charging voltage of double-layer capacitor 5 situation lower than threshold voltage VL, from outlet side (VDL output) output low level signal, under high situation, from the signal of VDL output output high level.At this moment, threshold voltage VL has the hysteresis amplitude from VL-to VL+.In addition, high-voltage detector 722, by reference voltage source 724 set threshold voltage VH (high-level threshold voltage) (VL＜VH), under the charging voltage of double-layer capacitor 5 situation lower than threshold voltage VH, from outlet side (VDL output) output low level signal, under high situation, from VDH output output high level signal.At this moment, threshold voltage VH has the hysteresis amplitude from VH-to VH+.VDL output and VDH output are transmitted to gate pole ON-OFF control circuit 73.
Gate pole ON-OFF control circuit 73 is made of inverter (INV) circuit 731 and NOR type RS-FF circuit 732.The VDL output signal is reversed by INV circuit 731, sends signal the terminal R (reseting terminal) of the NOR type RS-FF circuit 732 that carries out circuits for triggering actions to, and the VDH output signal is transferred to the terminal S (reseting terminal) of direct NOR type RS-FF circuit 732.Constitute by this circuit, among the terminal R, carrying out with threshold voltage VL is benchmark comparison counter-rotating signal is afterwards transmitted, specifically, when the charging voltage of double-layer capacitor 5 is lower than threshold voltage VL, the transmission high level signal, be threshold voltage VL when above, the transmission low level signal.In addition, among the terminal S, carrying out with threshold voltage VH is the signal transmission that the comparison of benchmark is carried out, specifically, when the charging voltage of double-layer capacitor 5 is lower than threshold voltage VH, the transmission low level signal, be threshold voltage VH when above, the transmission high level signal.
NOR type RS-FF circuit 732, carry out the resetting of NOR gate type, set-circuits for triggering action, according to output signal, carry out the contact 1 of gate pole switch 82 and the open and close controlling between the contact 2 through this terminal Q that control terminal transmitted of the gate pole switch 82 that is connected with terminal Q.In this case, as initial condition, the charging voltage of double-layer capacitor 5 is the intermediate voltage of threshold voltage VL and threshold voltage VH, when contact 1 and contact 2 are in connection status, if the charging voltage of double-layer capacitor 5 is reduced to threshold voltage VL, then the output signal of terminal Q becomes low level, as shown in Figure 7, turn-offs between the contact 1 of gate pole switch 82 and the contact 2.Next, gate pole switch 82 keeps off states, and the charging voltage of the double-layer capacitor 5 that begins to rise is when reaching threshold voltage VH, the output signal of terminal Q becomes high level, conducting between contact 1 and the contact 2, gate pole switch 82 keeps conducting state, begins to reduce the charging voltage of double-layer capacitor 5 once more, when reaching threshold voltage VL, turn-off once more between contact 1 and the contact 2, gate pole switch 82 keeps off state, rises to threshold voltage VH once more up to voltage.Like this, come the charging voltage of double-layer capacitor 5 is controlled, carry out the conducting state of gate pole switch 82 and the maintenance action of off state by two kinds of threshold voltages.
Secondary cell charge control circuit 8, by charging control switch 81, gate pole switch 82, charging modes selector switch 83, constant current charge control circuit (CC, Constant Current) 84, constant voltage charge control circuit (CV, Constant Voltage) the 85, the 2nd anti-backflow element 86 charging current detecting elements 87 and charging voltage detecting element 88 constitute.Charging control switch 81 is made of pMOS (p channel type MOS transistor).Gate pole switch 82 has the control terminal that is connected with the terminal Q of NOR type RS-FF circuit 732, and the contact 1 that is connected with the gate pole of charging control switch 81, and the contact 2 that is connected with charging modes selector switch 83.Charging modes selector switch 83, the contact y that has the contact z that is connected with the contact 2 of gate pole switch 82, the contact x that is connected with constant current charge control circuit (CC) 84 and be connected with constant voltage charge control circuit (CV) 85.In addition, charging modes selector switch 83 has in charging voltage and during less than set-point, contact z and contact x is coupled together, and is set-point when above in charging voltage, the charging voltage testing agency that does not show among the figure that contact z and contact y are coupled together.
Constant current charge control circuit (CC) 84 is controlled the level of the gate pole of charging control switch 81, so that the detected charging currents of coming of charging current detecting element 87 are given constant current.Constant voltage charge control circuit (CV) 85 is controlled the level of the gate pole of charging control switch 81, so that the detected charging voltages of coming of charging voltage detecting element 88 are given constant voltage.The 2nd anti-backflow element 86 for example is made of Schottky diode that forward voltage is lower etc., prevents from the reverse current of secondary battery 9 destruction to charging control switch 81.Charging current detecting element 87 is made of resistance etc., and charging current is detected.Charging voltage detecting element 88 is made of the resistance 88a, the 88b that connect, by this resistance 88a, 88b charging voltage is carried out dividing potential drop and detection.
Gate pole switch 82 allow be between contact 1 and the contact 2 turn-off or conducting state in any, charging modes selector switch 83, allow contact z be in conducting state often as assembling interconnecting and contact x or contact y, therefore, secondary cell charge control circuit 8, according to the state of each switch of this gate pole switch 82 and this charging modes selector switch 83, and become 3 kinds of operate conditions.Also promptly, as the 1st switch motion, when the contact of gate pole switch 82 1 is off state with contact 2, become identical current potential between the grid of charging control switch 81 and the source electrode, therefore, become off state between the source-drain electrode, secondary battery 9 is not charged.
In addition, as the 2nd switch motion, the contact 1 and the contact 2 of gate pole switch 82 are conducting state, and when being conducting state between the contact z of charging modes selector switch 83 and the contact x, the grid of charging control switch 81 is connected with constant current charge control circuit (CC) 84, with set in advance constant current secondary battery 9 is charged, allow stream has certain electric current in the charging current detecting element 87.In addition, as the 3rd switch motion, the contact 1 and the contact 2 of gate pole switch 82 are conducting state, and when being conducting state between the contact z of charging modes selector switch 83 and the contact y, the grid of charging control switch 81 is connected with constant voltage charge control circuit (CV) 85, with set in advance constant voltage secondary battery 9 is charged, allow and produce certain voltage in the charging voltage detecting element 88.
Secondary battery 9 is made of charge-discharge protection circuit 91 and lithium rechargeable battery 92.Charge-discharge protection circuit 91; to the caused overdischarge of electric power of overcharging, load is provided surplus from secondary cell charge control circuit 8; and the caused overcurrents such as short circuit of load short circuits or control circuit 92 are protected; the connection of the positive terminal by cutting off lithium rechargeable battery 92 is separated this lithium rechargeable battery 92 and to be protected with secondary cell charge control circuit 8 and load.
The sequential chart of the action when Fig. 8 is the charging of the lithium rechargeable battery 92 in the supply unit of presentation graphs 1, Fig. 9 is the figure of the charge characteristic of expression lithium rechargeable battery 92, Figure 10 is the figure of the charge characteristic of expression double-layer capacitor 5.
Contrast these figure, employed control method in this routine supply unit is described.
After solar irradiation is mapped on the solar module 1, by based on for example generating action of this solar module 1 of output characteristic corresponding to intensity of sunshine shown in Figure 2, begin to double-layer capacitor 5 electric power storages through the 1st anti-backflow element 2 and current limiting element 3.As shown in Figure 8, when the charging voltage Vedlc of double-layer capacitor 5 is threshold voltage VL, because the contact of gate pole switch 82 is in off state, therefore, owing to stop for the charging action of lithium rechargeable battery 92, therefore, circuit than double-layer capacitor 5 back levels, except the standby consumed power of control circuit 7 is started/is stopped in charging, just be in no load condition, therefore, this double-layer capacitor 5 becomes charge mode, and charging voltage Vedlc rises to threshold voltage VH from threshold voltage VL.At this moment, by maintenance action as shown in Figure 7, keep the off state of gate pole switch 82.
At moment t1, after the charging voltage Vedlc of double-layer capacitor 5 reaches threshold voltage VH, start/stop the capacitance voltage testing circuit 72 of control circuit 7 by charging, make the outlet side of low-voltage detector 721 become high level, and the outlet side of high-voltage detector 722 becomes high level, therefore, and by as Fig. 6 and control action shown in Figure 7, make the output of gate pole ON-OFF control circuit 73 become high level, the contact 1,2 of gate pole switch 82 becomes conducting state.By like this, begin charging action to lithium rechargeable battery 92.
At this moment, according to the charging voltage of lithium rechargeable battery 92,, select constant current or constant voltage charge pattern by the charging voltage testing agency that does not show among the figure of charging modes selector switch 83.For example, be under the situation of constant current charging mode at charge mode, charging modes selector switch 83 is connected contact z with contact x, come to lithium rechargeable battery 92 chargings by predefined current value I cc.At this moment, since the charging current Ichg of lithium rechargeable battery 92 be in the output impedance of solar module 1 the big current value that can't supply with, therefore, double-layer capacitor 5 becomes discharge mode, at section Ton1 discharge time, the charging voltage Vedlc of this double-layer capacitor 5 is reduced to threshold voltage VL from threshold voltage VH.At this moment, move the conducting state that keeps gate pole switch 82 by maintenance shown in Figure 7.
At moment t2, after the charging voltage Vedlc of double-layer capacitor 5 reaches threshold voltage VL once more, start/stop the capacitance voltage testing circuit 72 of control circuit 7 by charging, make the outlet side of low-voltage detector 721 become low level, and the outlet side of high-voltage detector 722 becomes low level, therefore, and by as Fig. 6 and control action shown in Figure 7, make the output of gate pole ON-OFF control circuit 73 become low level, gate pole switch 82 becomes the conducting off state.By like this, stop charging action to lithium rechargeable battery 92, circuit than double-layer capacitor 5 back levels, except the standby consumed power of control circuit 7 is started/is stopped in charging, just be in no load condition, therefore, this double-layer capacitor 5 becomes charge mode once more, and charging voltage Vedlc rises to threshold voltage VH from threshold voltage VL.At this moment, by maintenance action as shown in Figure 7, keep the off state of gate pole switch 82.
By carrying out above action repeatedly, lithium rechargeable battery 92 was charged by the cycle.When lithium rechargeable battery 92 charges near full, after arriving the charging voltage that is determined in advance, select the constant voltage charge pattern by the charging voltage testing agency that does not show among the figure of charging modes selector switch 83.At this moment, charging modes selector switch 83, contact z is connected with contact y, come to lithium rechargeable battery 92 chargings by predefined magnitude of voltage, therefore, the charging current Ichg of this lithium rechargeable battery 92, become than the little value of setting (for example Icv) of current value I cc at moment t3, at section Ton2 discharge time till moment T4, double-layer capacitor 5 discharges, this discharge time, section Ton2 was than section Ton1 length discharge time.
By giving the charging of 92 cycles of lithium rechargeable battery, as shown in Figure 9, the lithium rechargeable battery 92 of the Unit 1 that does not almost have charging capacity about initial voltage 3V, initial by the charging of constant current mode cycle, the voltage of this lithium rechargeable battery 92 rises slowly, after reaching the magnitude of voltage (for example 4.2V) that sets in advance, just come the cycle charging by constant voltage mode.Afterwards, the voltage of the lithium rechargeable battery 92 in constant current mode, synchronous with the charging action in cycle, internal driving by this lithium rechargeable battery 92 makes voltage rise, in addition, cycle charging current during constant voltage mode, along with lithium rechargeable battery 92 near full charging, because the long-term of the discharge time of double-layer capacitor 5 makes extend conduction time.
Because solar module 1 demonstrates output characteristic as shown in Figure 2, therefore, double-layer capacitor 5, as shown in figure 10, when intensity of sunshine is very strong in (for example time T 3), charging voltage Vedlc demonstrates rapid rising, (for example time T 1 when intensity of sunshine is very weak, T5) in, the rising of charging voltage Vedlc eases up, in addition, (for example time T 2 when do not have sunshine night etc., T4), even be in no load condition, because the standby consumed power that control circuit 7 is started/stops in the leakage current or the charging of this double-layer capacitor 5, charging voltage Vedlc slowly descends.Passed through like this after the rising or decline of charging voltage Vedlc, after moment tn reaches threshold voltage VH, begun lithium rechargeable battery 92 chargings, this charging voltage Vedl sharply descends.In this case, set the maximum output action voltage or the shutoff voltage of solar module 1, after the threshold voltage VH that is used for beginning lithium rechargeable battery 92 is charged, in fact, the reasons such as standby consumed power of starting/stopping control circuit 7 owing to Changes in weather or charging, the frequency that charging voltage Vedlc reaches threshold voltage VH tails off, the electric energy that solar module 1 is produced, keep only giving the state of double-layer capacitor 5 chargings for a long time, consequently, elongated to the cycle that the charging of lithium rechargeable battery 92 is moved, the transmission of the energy is inefficent.Therefore, be used for allowing the rechargeable energy of double-layer capacitor 5 carry out the best setting of voltage threshold VH, the VL of energy transmission one by one to lithium rechargeable battery 92, and the setting of the best of ESR5b of double-layer capacitor 5 (Rx) and direct capacitance 5a (Cx), improved charge efficiency.
In addition, as shown in Figure 5, because the passage of time and the sunshine condition co-variation of the energy output in 1 day, therefore, be used for allowing the best of the threshold voltage VH that holding time of charging action of the lithium rechargeable battery 92 in 1 day increases set, and the setting of the best of ESR5b of double-layer capacitor 5 (Rx) and direct capacitance 5a (Cx), improved charge efficiency.In addition, the threshold voltage VL that is used for allowing the charging of lithium rechargeable battery 92 stop, for the rechargeable energies that take out double-layer capacitors 5, it is set to alap magnitude of voltage, by like this, helps to improve charge efficiency more.
By like this, for change corresponding to the caused sunshine condition of method to set up of the conversion of weather or solar module 1, efficiently lithium rechargeable battery 92 is charged, by will be than the low magnitude of voltage of maximum output action voltage of solar module 1, be made as the threshold voltage VH that begins the charging action of this lithium rechargeable battery 92, even under more weak sunshine condition, or under the lower hot environment of the output voltage of solar module 1, also can begin the charging action.Specifically, the setting of threshold voltage VH is below 90% of maximum output action voltage of solar module 1.In addition,, be set at the lower limit of the input voltage of step-up DC-DC converter 6, can remove the rechargeable energy of double-layer capacitor 5 more by stopping threshold voltage VL to the charging action of lithium rechargeable battery 92.Specifically, VL is set in below the 2V.In addition, in order to improve the efficient of the charging action in 1 day to lithium rechargeable battery 92, carry out under the bad weather that constantly changes charging, the charging after the sunrise just and up to before sunset charging, by allowing the charge cycle be the cycle shorter than the variation of intensity of sunshine, specifically, by make its several seconds between several minutes, even under the sunshine condition that fierceness changes, also can be to lithium rechargeable battery 92 action of charging.
For example, by allowing following condition enactment be applicable to that formula (1) to formula (5), comes the representational charge cycle in the tentative calculation present embodiment.
Condition:
The RSR5b:Rx=100 of double-layer capacitor 5 (m Ω)
The direct capacitance 5a:Cx=40 of double-layer capacitor 5 (mF)
Charging beginning threshold voltage: VH=5 (V)
Charging outage threshold voltage: VL=2 (V)
The charging current of lithium rechargeable battery 92: constant current (CC) pattern Icc=0.1 (A)
The generation current Ip=0.05 (A) of solar module 1
[ESR loss]
Loss＝0.1(A)×0.1(Q)＝0.01V ...(1)
[between the charge period of double-layer capacitor 5]
Toff
＝0.04(F)×|2(V)+0.01(V)-5(V)|/0.05(A)
＝0.24(sec) ...(2)
[interdischarge interval of double-layer capacitor 5 (between the charge period of=lithium rechargeable battery 92)]
Ton
＝0.04(F)×|5(V)+0.01(V)-2(V)|/0.1(A)
＝0.12(sec) ...(3)
[charge cycle]
T＝Ton+Toff＝1.2+2.4＝3.6(sec) ...(4)
[charging energy rate]
D＝Ton/T＝1.2/3.6＝33％。
According to the result of calculation of above-mentioned formula (1) to formula (5), if double-layer capacitor 5 ESR5b use 100m Ω, direct capacitance 5a uses 5mF, then uses under the situation of generation current Ip as the solar module 1 of 0.05A, and charge cycle is about 3.6 seconds.At this moment, the charging duty ratio of lithium rechargeable battery 92 is about 33%.
In addition, solar module 1 is in parallel with double-layer capacitor 5, the impedance of imagining this solar module 1 is more than 10 Ω, because with the ESR5b of double-layer capacitor 5 relatively be more than 100 times, therefore, this solar module 1 is output as below 1%, almost can ignore, therefore, in the calculating of the interdischarge interval of double-layer capacitor 5, being equivalent to of solar module 1 do not had and calculate.
As mentioned above, in this execution mode 1, control circuit 7 is started/stops in charging, detect the voltage of double-layer capacitor 5, at this voltage is that threshold voltage VH is when above, the charging control signal (output signal of terminal Q) that keeps being used for to secondary battery 9 chargings is an effective model (high level), charge and begin action, after this, when the voltage of this double-layer capacitor 5 is threshold voltage VL, keeping this charging control signal is invalid mode (low level), charge and stop action, secondary cell charge control circuit 8, when this charging control signal is effective model, with electricity stored in this double-layer capacitor 5 this secondary battery 9 is charged, therefore, even under the variation of the variation of intensity of sunshine or environment temperature makes the situation of the electricity change that solar cell produced, also can allow these secondary battery 9 stable chargings.In addition, because capacitance voltage testing circuit 72 does not need near solar module 1, therefore, can not be subjected to the influence of the environment temperature of this solar module 1, can detect voltage accurately by producing high-precision threshold voltage VH and threshold voltage VL.In addition, when the voltage of secondary battery 9 during less than given threshold value, constant current charge control circuit 84 charges to this secondary battery 9 by given constant current, when the voltage of this secondary battery 9 reaches this given threshold value when above, constant voltage charge control circuit 85 charges to this secondary battery 9 with given constant voltage, therefore, can not be subjected to the influence of the impedance of this secondary battery 9 and circuit, efficiently this secondary battery 9 be charged.
[execution mode 2]
Figure 11 with the common key element of key element among the Fig. 1 shown in the execution mode 1, has been put on identical symbol for the circuit diagram of the electric formation of the voltage device of expression embodiments of the present invention 2.
In this routine supply unit, the back level of the secondary battery 9 among Fig. 1 is provided with output translator 10.Output translator 10 is made of DC-DC converter 101 and DC-DC converter 102.The input of DC-DC converter 101 and DC-DC converter 102 is connected with the positive pole of secondary battery 9 jointly.The output A of DC-DC converter 101 is connected with load L1, and the output B of DC-DC converter 102 is connected with load L2.Other formations are identical with Fig. 1.
In this supply unit, identical with execution mode 1, solar module 1 by the electric energy that sunlight produced, is stored the charging of carrying out lithium rechargeable battery 92 in cycle as the rechargeable energy of double-layer capacitor 5.Like this, as power supply, stable power is provided for respectively load L1, L2 the charging voltage of ion secondary battery 92 from DC-DC converter 101,102.
[execution mode 3]
Figure 12 with the common key element of key element among the Fig. 1 shown in the execution mode 1, has been put on identical symbol for the circuit diagram of the electric formation of the voltage device of expression embodiments of the present invention 3.
The supply unit that this is routine starts/stops control circuit 7, secondary cell charge control circuit 8, secondary battery 9, main capacitance 11, auxilliary electric capacity 12, main capacitance over-voltage protection element 13, auxilliary capacitance overvoltage protection element 14, main capacitance anti-backflow element 15, auxilliary electric capacity anti-backflow element 16, charging capacitor selection circuit 17, electric capacity charging voltage comparison circuit 18 and auxilliary capacitor discharge control circuit 19 by solar module the 1, the 1st anti-backflow element 2, current limiting element 3, step-up DC-DC converter 6, charging and constitutes.Main capacitance 11 is made of ESR11b and direct capacitance 11a, and auxilliary electric capacity 12 is made of ESR12b and direct capacitance 12a.Main capacitance 11 and auxilliary electric capacity 12, by using the hydrogen set type of dilute sulfuric acid as electrolyte, or the organic system type of use organic electrolyte, constitute the double-layer capacitor of low ESR, high output impedance with tens of Ω levels of solar module 1, be transformed into the Low ESR of the following little Ω level of 1 Ω, and be equivalent to the long-pending electric weight of the charging voltage of direct capacitance and double-layer capacitor 5 by storage, the transformation of electrical energy that solar module 1 is produced is a low impedance power.
Charging capacitor is selected circuit 17, is made of selector switch control circuit 171 and selector switch 172.Selector switch control circuit 171, according to selector switch control signal w (output of gate pole ON-OFF control circuit 73) selector switch 172 is controlled.Selector switch 172 has contact c, contact a and contact b.Electric capacity charging voltage comparison circuit 18, by the voltage that compares main capacitance 11 and the voltage of auxilliary electric capacity 12, the comparator of output switch control signal VCMP (CMP) constitutes.
Auxilliary capacitor discharge control circuit 19 is made of discharge switch 191, auxilliary capacitance voltage testing circuit 192 and discharge switch control circuit 193.Discharge switch 191 has control terminal, contact 3 and contact 4.Auxilliary capacitance voltage testing circuit 192 has the voltage of auxilliary electric capacity 12 and the threshold voltage VS of reference voltage source 194 is compared the Vsub detector of output switch control signal VDS.This Vsub detector has hysteresis characteristic.Discharge switch control circuit 193 according to switch controlling signal VDS or switch controlling signal VCMP, is controlled discharge switch 191.
The sequential chart of the action of Figure 13 during for the charging of lithium rechargeable battery 92 in the supply unit of expression Figure 12.
Contrast this figure, employed control method in this routine supply unit is described.
As initial condition, under the contact c of the selector switch 172 that constitutes charging capacitor selector switch 17 and situation that contact a is connected, after solar irradiation is mapped on the solar module 1, the generating action based on this solar module 1 of as shown in Figure 2 output characteristic by corresponding to intensity of sunshine begins to main capacitance 11 electric power storages through the 1st anti-backflow element 2 and current limiting element 3.
As shown in figure 13, when the charging voltage Vmain of main capacitance 11 is threshold voltage VL, because the contact of gate pole switch 82 is in off state, therefore, because the charging action to lithium rechargeable battery 92 stops, therefore, the back level of main capacitance 11 is except the standby consumed power of control circuit 7 is started/stopped in charging, just be in no load condition, therefore, this main capacitance 11 becomes charge mode, and charging voltage Vmain rises to threshold voltage VH from threshold voltage VL.During this,, keep the off state of gate pole switch 82 by maintenance action shown in Figure 7.At this moment, the charging voltage Vsub of auxiliary capacitor 12 is because the discharge switch 191 of auxilliary capacitor discharge control circuit 19 is in off state, therefore, owing to should assist pair the standby consumed power of electric capacity 12, begin the waveform that voltage descends slowly thereby demonstrate from the initial charge magnitude of voltage with control circuit (electric capacity charging voltage comparison circuit 18 and auxilliary capacitor discharge control circuit 19).
At moment t1, after the charging voltage Vmain of main capacitance 11 reaches threshold voltage VH, start/stop the capacitance voltage testing circuit 72 of control circuit 7 by charging, make the outlet side of low-voltage detector 721 become high level, and the outlet side of high-voltage detector 722 becomes high level, therefore, and by as Fig. 6 and control action shown in Figure 7, make the output of gate pole ON-OFF control circuit 73 become high level, gate pole switch 82 becomes conducting state.By like this, begin charging action to lithium rechargeable battery 92.In this case, the same with execution mode 1, according to the charging voltage of lithium rechargeable battery 92, select constant current or constant voltage charge pattern.For example, be under the situation of constant current charging mode at charge mode, charging modes selector switch 83 is connected contact z with contact x, come to lithium rechargeable battery 92 chargings by predefined current value I cc.At this moment and since the charging current Ichg of lithium rechargeable battery 92 be in the output impedance of solar module 1 the big current value that can't supply with, therefore, main capacitance 11 becomes discharge mode, charging voltage Vmain is reduced to threshold voltage VL from threshold voltage VH.At this moment, move the conducting state that keeps gate pole switch 82 by maintenance shown in Figure 7.
Begin after the charging action to lithium rechargeable battery 92, start/stop the selector switch control signal w of the outlet side of control circuit 7 by coming self-charging, charging capacitor selects the selector switch control circuit 171 of circuit 17 to control, allow the contact c of selector switch 172 be connected with contact b, auxilliary electric capacity 12 begins charging, and charging voltage Vsub begins to rise.Keep this contact state in during the charging of lithium rechargeable battery 92 is moved always.
At moment t2, after the charging voltage Vmain of main capacitance 11 reaches threshold voltage VL once more, start/stop the capacitance voltage testing circuit 72 of control circuit 7 by charging, make the outlet side of low-voltage detector 721 become low level, and the outlet side of high-voltage detector 722 becomes low level, therefore, and by as Fig. 6 and control action shown in Figure 7, make the output of gate pole ON-OFF control circuit 73 become low level, gate pole switch 82 becomes off state.By like this, stop charging action to lithium rechargeable battery 92.So, start/stop the selector switch control signal w of the outlet side of control circuit 7 by coming self-charging, charging capacitor selects the selector switch control circuit 171 of circuit 17 to control, allow the contact c of selector switch 172 be connected with contact a, by like this, main capacitance 11 begins charging, and charging voltage Vmain begins to rise.At this moment, because the discharge switch 191 of auxilliary capacitor discharge control circuit 19 is in off state, therefore, owing to should assist pair the standby consumed power of electric capacity 12 with electric capacity charging voltage comparison circuit 18 and auxilliary capacitor discharge control circuit 19, thereby make the charging voltage Vsub of auxilliary electric capacity 12, demonstrate from the initial charge magnitude of voltage and begin the waveform that voltage descends slowly.
At moment t3, after the charging voltage Vmain of main capacitance 11 reaches threshold voltage VH once more, start/stop the capacitance voltage testing circuit 72 of control circuit 7 by charging, make the outlet side of low-voltage detector 721 become high level, and the outlet side of high-voltage detector 722 becomes high level, therefore, and by as Fig. 6 and control action shown in Figure 7, make the output of gate pole ON-OFF control circuit 73 become high level, gate pole switch 82 becomes conducting state.By like this, begin charging action to lithium rechargeable battery 92.At this moment, according to the charging voltage of lithium rechargeable battery 92, select constant current or constant voltage charge pattern.For example, be under the situation of constant current charging mode at charge mode, charging modes selector switch 83 is connected contact z with contact x, come to lithium rechargeable battery 92 chargings by predefined current value I cc.At this moment and since the charging current Ichg of lithium rechargeable battery 92 be in the output impedance of solar module 1 the big current value that can't supply with, therefore, main capacitance 11 becomes discharge mode, charging voltage Vmain is reduced to threshold voltage VL from threshold voltage VH.At this moment, move the conducting state that keeps gate pole switch 82 by maintenance shown in Figure 7.
Begin once more after the charging action to lithium rechargeable battery 92, start/stop the selector switch control signal w of the outlet side of control circuit 7 by coming self-charging, charging capacitor selects the selector switch control circuit 171 of circuit 17 to control, allow the contact c of selector switch 172 be connected with contact b, be connected with contact b by contact c, auxilliary electric capacity 12 begins charging, and charging voltage Vsub begins to rise.At moment t4, when charging voltage Vsub reaches than the also high threshold voltage VS that is predetermined of threshold voltage VH, constitute the auxilliary capacitance voltage testing circuit 192 of auxilliary capacitor discharge control circuit 19, to discharge switch control circuit 193 transmit button control signal VDS, allow discharge switch 191 become conducting state.By like this, replace the voltage of main capacitance 11, start/stop the voltage that control circuit 7 provides auxilliary electric capacity 12 to charging.Therefore, lithium rechargeable battery 92 stops the charging action from main capacitance 11, then begins the charging action from auxilliary electric capacity 12.At this moment,,, make the discharging current of auxilliary electric capacity 12 can not flow into main capacitance 11, lithium rechargeable battery 92 is charged by main capacitance anti-backflow element 15 though become the charging voltage of main capacitance 11 state lower than the charging voltage of auxilliary electric capacity 12.
Charging voltage Vmain by main capacitance 11 since the generating of solar module 1 rise, and the charging voltage Vsub of auxilliary electric capacity 12 is owing to the charging to lithium rechargeable battery 92 descends, at moment t5, above-mentioned charging voltage Vmain and Vsub reach after the magnitude of voltage Vx of the balance of voltage, electric capacity charging voltage comparison circuit 18 is to discharge switch control circuit 193 transmit button control signal VCMP, and discharge switch 191 is changed to off state.Charging voltage Vsub by auxilliary electric capacity 12 begins lithium rechargeable battery 92 chargings from the discharging action of VS to the decline of Vx, and the auxiliary charging during making among the Tsub becomes possibility.Therefore, lithium rechargeable battery 92 can charge more efficiently.
By carrying out above action repeatedly, lithium rechargeable battery 92 by these two cycles of the discharge cycle of the discharge cycle of main capacitance 11 and auxilliary electric capacity 12, carries out the cycle charging.When lithium rechargeable battery 92 charges near full, arrive after the charging voltage that is determined in advance, select the constant voltage charge pattern.At this moment, charging modes selector switch 83 is connected contact z with contact y, comes to lithium rechargeable battery 92 chargings by predefined magnitude of voltage, and therefore, charging current becomes the value littler than Icc, and main capacitance 11 extends with the discharge cycle of auxilliary electric capacity 12.
As mentioned above, in this execution mode 3, charging voltage Vsub by auxilliary electric capacity 12 is from the discharging action of VS to the decline of Vx, lithium rechargeable battery 92 is charged, auxiliary charging during making among the Tsub becomes possibility, and lithium rechargeable battery 92 can charge more efficiently than execution mode 1.
More than the contrast accompanying drawing has been described in detail embodiments of the present invention, but concrete formation is not limited in above-mentioned execution mode, and the change that relates in the scope that does not break away from design of the present invention is waited for, is also included among the present invention.
For example, the circuit formation that control circuit 7 is started/stops in charging can also be other formations, as long as it is just passable to have identical functions.In addition, charging control switch 81 except pMOS, can also pass through formations such as bipolar transistor or relay, and additional each self-corresponding drive circuit.
Industry is used
Supply unit of the present invention, can be by the solar energy of semipermanent supply, secondary cell such as employed lithium rechargeable battery in information station machine etc. is charged, therefore, even in incomplete place of electric power facility (infrastructure) or area, also can allow the information station machine carry out work.Therefore, can be applicable to Radio Network System, general fit calculation terminal, unattended system's etc. power supply.
Claims (7)
1. a supply unit is to have solar cell, with the electrical power storage portion that stores the electric power that is charged by the generating of this solar cell, and by the secondary cell that stored electric power in this electrical power storage portion charges, it is characterized in that, is provided with:
Voltage detection department, it detects the voltage of above-mentioned electrical power storage portion, when this voltage becomes high-level threshold voltage when above, the charging control signal that keeps being used for to above-mentioned secondary cell charge is an effective model, charging begins action, afterwards, and when the voltage of above-mentioned electrical power storage portion becomes the low level threshold voltage, keeping above-mentioned charging control signal is invalid mode, charges with stopping action; And
Charging control section, when it was effective model at above-mentioned charging control signal, stored electric power charged to above-mentioned secondary cell in the above-mentioned electrical power storage of the foundation portion.
2. supply unit as claimed in claim 1 is characterized in that:
Above-mentioned voltage detection department has:
The voltage and the above-mentioned high-level threshold voltage of above-mentioned electrical power storage portion are compared, export the 1st comparison circuit of the 1st comparative result; And
The voltage and the above-mentioned low level threshold voltage of above-mentioned electrical power storage portion are compared, export the 2nd comparison circuit of the 2nd comparative result; And
According to above-mentioned the 1st comparative result or above-mentioned the 2nd comparative result, above-mentioned charging control signal is remained the holding circuit of above-mentioned effective model or invalid mode.
3. supply unit as claimed in claim 1 is characterized in that:
Above-mentioned charging control section has:
Switching mechanism when it is above-mentioned effective model at above-mentioned charging control signal, becomes conducting state, according to stored electric power in the above-mentioned electrical power storage portion above-mentioned secondary cell is charged; And
The constant current charge controlling organization, it charges to above-mentioned secondary cell with given constant current in the given threshold value of the voltage ratio of above-mentioned secondary cell hour; And
Constant voltage charge controlling organization, its voltage at above-mentioned secondary cell become above-mentioned given threshold value when above, with given constant voltage above-mentioned secondary cell are charged.
4. supply unit as claimed in claim 1 is characterized in that:
Above-mentioned electrical power storage portion is made of double-layer capacitor,
This double-layer capacitor is set to, and its internal driving is lower than the internal driving of above-mentioned solar cell.
5. supply unit as claimed in claim 1 is characterized in that, additional have:
The auxiliary power storage part; And
The boost voltage test section, it detects, when above-mentioned charging control signal is above-mentioned effective model, generating by above-mentioned solar cell is charged to above-mentioned auxiliary power storage part, when the voltage of this boost voltage storage part becomes higher than above-mentioned high-level threshold voltage, the voltage that replaces above-mentioned electrical power storage portion is supplied with the voltage of above-mentioned boost voltage storage part to above-mentioned voltage detection department.
6. supply unit as claimed in claim 5 is characterized in that:
Above-mentioned electrical power storage portion is made of double-layer capacitor,
This double-layer capacitor is set to, and its internal driving is lower than the internal driving of above-mentioned solar cell.
7. control method, it is used to have solar cell, the electrical power storage portion of the electric power that is charged by the generating of this solar cell with storage, and the supply unit of the secondary cell that is charged by stored electric power in this electrical power storage portion is characterized in that:
Detect the voltage of above-mentioned electrical power storage portion, when this voltage becomes high-level threshold voltage when above, the charging control signal that keeps being used for to above-mentioned secondary cell charge is an effective model, charge and begin action, afterwards, when the voltage of above-mentioned electrical power storage portion became the low level threshold voltage, keeping above-mentioned charging control signal was invalid mode, charged with stopping action; When above-mentioned charging control signal is effective model, above-mentioned secondary cell is charged according to stored electric power in the above-mentioned electrical power storage portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004145705 | 2004-05-14 | ||
| JP2004145705A JP4133924B2 (en) | 2004-05-14 | 2004-05-14 | Power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1697282A true CN1697282A (en) | 2005-11-16 |
| CN100384050C CN100384050C (en) | 2008-04-23 |
Family
ID=35308262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100728698A Expired - Fee Related CN100384050C (en) | 2004-05-14 | 2005-05-16 | Power source device and charge controlling method to be used in same |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7566828B2 (en) |
| JP (1) | JP4133924B2 (en) |
| KR (1) | KR20060047861A (en) |
| CN (1) | CN100384050C (en) |
| DE (1) | DE102005021821A1 (en) |
| TW (1) | TWI273756B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433501C (en) * | 2005-10-31 | 2008-11-12 | 东京科艺工程株式会社 | Solar energy type portable charger |
| CN102005801A (en) * | 2010-12-30 | 2011-04-06 | 广东易事特电源股份有限公司 | Charging circuit of solar charging controller in common-ground structure |
| CN102419613A (en) * | 2010-09-22 | 2012-04-18 | 雅马哈株式会社 | Voltage generation circuit |
| CN102684655A (en) * | 2012-06-02 | 2012-09-19 | 乐清共拓电气科技有限公司 | Circuit for driving large-power load through small-power power supply |
| CN102723746A (en) * | 2011-03-30 | 2012-10-10 | 上海桥茵科贸有限公司 | Solar energy parallel-charging control system based on strategy |
| CN102801189A (en) * | 2011-05-26 | 2012-11-28 | 株式会社丰田自动织机 | Rechargeable battery power supply starter and cell balancing apparatus |
| CN103051035A (en) * | 2013-01-25 | 2013-04-17 | 云南君和科技有限公司 | Full-range pulse-width modulation charging technology for photovoltaic power generation |
| CN104228708A (en) * | 2013-06-13 | 2014-12-24 | 爱信精机株式会社 | Opening and closing apparatus |
| CN104467074A (en) * | 2014-11-10 | 2015-03-25 | 深圳市兴吉胜电子有限公司 | Super-capacitor power bank |
| CN105827003A (en) * | 2016-06-01 | 2016-08-03 | 广东小天才科技有限公司 | Mobile terminal charged through self power consumption heating |
| CN106160106A (en) * | 2016-08-04 | 2016-11-23 | 深圳市大能科技发展有限公司 | A kind of Wearable device based on solar cell for supplying power and method for designing |
| CN111806605A (en) * | 2019-12-31 | 2020-10-23 | 北京骑胜科技有限公司 | Method and device for adjusting system running state, storage medium and electronic equipment |
| CN116073502A (en) * | 2022-11-30 | 2023-05-05 | 东莞市仲康电子科技有限公司 | Vehicle-mounted power supply charger with solar MPPT |
Families Citing this family (86)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0520424A2 (en) * | 2005-07-20 | 2009-05-05 | Ecosol Solar Technologies Inc | device using photovoltaic array power output and method for using power output from a photovoltaic array device having a capacitor array |
| DE102005058140A1 (en) * | 2005-11-29 | 2007-06-14 | Thai-German Solar Co., Ltd. | Apparatus and method for controlling an energy flow between a solar energy source and an electric motor |
| US20070132426A1 (en) * | 2005-12-08 | 2007-06-14 | Kim Kwang M | Power source device for sensor nodes of ubiquitous sensor network |
| KR100799564B1 (en) * | 2005-12-08 | 2008-01-31 | 한국전자통신연구원 | Power source device for sensor nodes of ubiquitous sensor network |
| US20090217965A1 (en) * | 2006-04-21 | 2009-09-03 | Dougal Roger A | Apparatus and method for enhanced solar power generation and maximum power point tracking |
| US8148627B2 (en) | 2006-08-25 | 2012-04-03 | Sunpower Corporation | Solar cell interconnect with multiple current paths |
| EP1925322A1 (en) * | 2006-11-27 | 2008-05-28 | Sara Lee/DE N.V. | Fragrance generator |
| US7908101B2 (en) * | 2007-02-28 | 2011-03-15 | Stmicroelectronics, Inc. | Integrated circuit and method for monitoring and controlling power and for detecting open load state |
| US20080238354A1 (en) * | 2007-03-29 | 2008-10-02 | Kinpo Electronics, Inc. | Solar energy charging device for computer |
| US8158877B2 (en) * | 2007-03-30 | 2012-04-17 | Sunpower Corporation | Localized power point optimizer for solar cell installations |
| TWI357203B (en) * | 2007-08-08 | 2012-01-21 | Solar energy charging/discharging system | |
| US8461817B2 (en) * | 2007-09-11 | 2013-06-11 | Powercast Corporation | Method and apparatus for providing wireless power to a load device |
| US8294451B2 (en) * | 2007-12-03 | 2012-10-23 | Texas Instruments Incorporated | Smart sensors for solar panels |
| CN100547851C (en) * | 2007-12-06 | 2009-10-07 | 中国科学院电工研究所 | Lithium ion battery-super capacitor mixed energy storage optical voltage system |
| TWI409606B (en) * | 2007-12-26 | 2013-09-21 | Hon Hai Prec Ind Co Ltd | Solar energy control system |
| KR101407868B1 (en) | 2008-01-25 | 2014-06-17 | 삼성에스디아이 주식회사 | Battery pack |
| DE102008021875A1 (en) | 2008-03-17 | 2009-10-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device and method for converting a potential |
| US8289183B1 (en) | 2008-04-25 | 2012-10-16 | Texas Instruments Incorporated | System and method for solar panel array analysis |
| US8139382B2 (en) * | 2008-05-14 | 2012-03-20 | National Semiconductor Corporation | System and method for integrating local maximum power point tracking into an energy generating system having centralized maximum power point tracking |
| TW201014146A (en) * | 2008-05-14 | 2010-04-01 | Nat Semiconductor Corp | System and method for an array of intelligent inverters |
| US8279644B2 (en) * | 2008-05-14 | 2012-10-02 | National Semiconductor Corporation | Method and system for providing maximum power point tracking in an energy generating system |
| US9077206B2 (en) * | 2008-05-14 | 2015-07-07 | National Semiconductor Corporation | Method and system for activating and deactivating an energy generating system |
| US20090309538A1 (en) * | 2008-06-16 | 2009-12-17 | Jian Xu | Energy storage and management circuit |
| JP5486780B2 (en) * | 2008-07-01 | 2014-05-07 | 株式会社日立製作所 | Battery system |
| US8093872B2 (en) * | 2008-07-03 | 2012-01-10 | University Of Delaware | Method for Maximum Power Point Tracking of photovoltaic cells by power converters and power combiners |
| GB0814409D0 (en) * | 2008-08-06 | 2008-09-10 | G24 Innovations Ltd | Electrical devices with standby mode |
| JP4870127B2 (en) * | 2008-08-25 | 2012-02-08 | 日本電信電話株式会社 | Full charge determination device and full charge determination method |
| US10153383B2 (en) * | 2008-11-21 | 2018-12-11 | National Semiconductor Corporation | Solar string power point optimization |
| US20100257529A1 (en) * | 2009-04-06 | 2010-10-07 | Christopher Wilkerson | Efficient systems and methods for consuming and providing power |
| JP5680059B2 (en) * | 2009-04-17 | 2015-03-04 | ナショナル セミコンダクター コーポレーションＮａｔｉｏｎａｌ Ｓｅｍｉｃｏｎｄｕｃｔｏｒ Ｃｏｒｐｏｒａｔｉｏｎ | Overvoltage protection system and method in photovoltaic system |
| WO2010121211A2 (en) * | 2009-04-17 | 2010-10-21 | National Semiconductor Corporation | System and method for over-voltage protection of a photovoltaic system with distributed maximum power point tracking |
| JP5390925B2 (en) * | 2009-04-24 | 2014-01-15 | パナソニック株式会社 | Battery pack |
| US20100288327A1 (en) * | 2009-05-13 | 2010-11-18 | National Semiconductor Corporation | System and method for over-Voltage protection of a photovoltaic string with distributed maximum power point tracking |
| KR101530397B1 (en) * | 2009-06-01 | 2015-06-22 | 석 영 정 | Charge pump apparatus for weak power recycling based on connection range control of series capacitor |
| JP2011010418A (en) * | 2009-06-24 | 2011-01-13 | J&K Car Electronics Corp | Auxiliary charging device and auxiliary charging method |
| US11218003B2 (en) * | 2009-09-22 | 2022-01-04 | Phoenix Broadband Technologies, Llc | Method and apparatus for intelligent battery charge equalization and monitoring |
| US20110084646A1 (en) * | 2009-10-14 | 2011-04-14 | National Semiconductor Corporation | Off-grid led street lighting system with multiple panel-storage matching |
| US8421400B1 (en) | 2009-10-30 | 2013-04-16 | National Semiconductor Corporation | Solar-powered battery charger and related system and method |
| US8547057B2 (en) | 2009-11-17 | 2013-10-01 | Qualcomm Incorporated | Systems and methods for selective wireless power transfer |
| WO2011068499A1 (en) * | 2009-12-01 | 2011-06-09 | Masco Corporation | Energy storage and management circuit |
| TWI465003B (en) * | 2009-12-30 | 2014-12-11 | Hon Hai Prec Ind Co Ltd | Solar storage system and method of charge using the same |
| EP2553737A4 (en) * | 2010-04-01 | 2015-05-20 | Morgan Solar Inc | An integrated photovoltaic module |
| US20110264293A1 (en) * | 2010-04-27 | 2011-10-27 | Earl David Forrest | System and method of determining an energy harvesting capability of a location |
| WO2012007134A2 (en) * | 2010-07-10 | 2012-01-19 | Gerd Reime | Circuit and method for power management |
| TWI422116B (en) * | 2010-08-25 | 2014-01-01 | Hon Hai Prec Ind Co Ltd | Battery charge apparatus |
| JP5591641B2 (en) | 2010-09-17 | 2014-09-17 | ローム株式会社 | Charging circuit, control IC thereof, and electronic device using the same |
| KR101696724B1 (en) * | 2010-10-19 | 2017-01-16 | 엘지전자 주식회사 | Smart window apparatus |
| JP5638926B2 (en) * | 2010-11-30 | 2014-12-10 | ラピスセミコンダクタ株式会社 | Semiconductor chip |
| US9124131B2 (en) * | 2011-01-24 | 2015-09-01 | Sunrise Micro Devices, Inc. | Dynamic control of the power sourcing capability of a power source |
| US10007286B2 (en) | 2011-01-24 | 2018-06-26 | Sunrise Micro Devices, Inc. | Switching regulator overload detector |
| US8773083B2 (en) | 2011-01-24 | 2014-07-08 | Sunrise Micro Devices, Inc. | Detection of insufficient current sourcing capability of supplied power |
| JP5356439B2 (en) * | 2011-03-04 | 2013-12-04 | 古河電気工業株式会社 | Charge control device and charge control method |
| RU2475921C2 (en) * | 2011-04-28 | 2013-02-20 | Открытое акционерное общество "Научно-производственный центр "Полюс" | Standalone power supply system |
| US9073937B2 (en) | 2011-06-16 | 2015-07-07 | Board Of Trustees Of The University Of Alabama | Organic photovoltaic-battery hybrid device |
| JP2013038941A (en) * | 2011-08-09 | 2013-02-21 | Nippon Dengyo Kosaku Co Ltd | Charge voltage control circuit and power supply circuit |
| JP5842483B2 (en) * | 2011-09-06 | 2016-01-13 | 株式会社デンソー | Secondary battery power supply device and in-vehicle device |
| CN102410876A (en) * | 2011-09-29 | 2012-04-11 | 成都英泰力电子有限公司 | Illumination sensing device |
| US10690725B2 (en) * | 2012-03-29 | 2020-06-23 | Atieva, Inc. | Battery state-of-charge estimation |
| WO2013159306A1 (en) * | 2012-04-26 | 2013-10-31 | General Electric Company | Power converter system, damping system, and method of operating power converter system |
| US9525305B2 (en) | 2012-08-22 | 2016-12-20 | Sharp Kabushiki Kaisha | Electric system and vehicle |
| JP6026225B2 (en) * | 2012-10-30 | 2016-11-16 | 株式会社日立情報通信エンジニアリング | Power storage system |
| JP5829999B2 (en) * | 2012-11-12 | 2015-12-09 | Fdk株式会社 | Charger |
| JP5791584B2 (en) * | 2012-11-28 | 2015-10-07 | 三菱重工業株式会社 | Voltage monitoring system, voltage monitoring apparatus, and voltage monitoring method |
| JP5998069B2 (en) * | 2013-01-23 | 2016-09-28 | ルネサスエレクトロニクス株式会社 | Semiconductor device and battery pack |
| JP5798594B2 (en) * | 2013-06-18 | 2015-10-21 | トヨタ自動車株式会社 | Charge control device |
| US20150084579A1 (en) * | 2013-09-20 | 2015-03-26 | ACCO Brands Corporation | Charging circuit |
| US9948123B2 (en) * | 2014-02-11 | 2018-04-17 | WE CARE Solar | Portable solar power management system |
| US10295608B2 (en) | 2014-07-18 | 2019-05-21 | Phoenix Broadband Technologies, Llc | Non-intrusive correlating battery monitoring system and method |
| DE102014216291A1 (en) * | 2014-08-15 | 2016-02-18 | TRUMPF Hüttinger GmbH + Co. KG | Method for operating a bidirectionally operable inverter and battery management system |
| US9590497B2 (en) | 2014-10-14 | 2017-03-07 | Rosemount Aerospace Inc. | Systems and methods for capacitor charge extraction |
| EP3017993B1 (en) * | 2014-11-07 | 2021-04-21 | Volvo Car Corporation | Power and current estimation for batteries |
| US9673635B2 (en) * | 2014-12-15 | 2017-06-06 | Tyco Fire & Security Gmbh | Self sustaining energy harvesting system |
| WO2016100474A1 (en) | 2014-12-16 | 2016-06-23 | Abb Technology Ag | Energy panel arrangement power dissipation |
| WO2016123305A1 (en) | 2015-01-28 | 2016-08-04 | Abb Technology Ag | Energy panel arrangement shutdown |
| WO2016134356A1 (en) | 2015-02-22 | 2016-08-25 | Abb Technology Ag | Photovoltaic string reverse polarity detection |
| KR101582771B1 (en) * | 2015-04-13 | 2016-01-21 | 석 영 정 | Charge pump apparatus for weak power recycling based on connection range control of series capacitor |
| US20170117730A1 (en) * | 2015-06-26 | 2017-04-27 | The Regents Of The University Of California | Efficient supercapacitor charging technique by a hysteretic charging scheme |
| TWI583097B (en) * | 2016-01-15 | 2017-05-11 | A wireless sensor that draws heat energy to convert electrical energy | |
| JP2018013765A (en) * | 2016-04-28 | 2018-01-25 | 株式会社半導体エネルギー研究所 | Electronic device |
| TWI633738B (en) * | 2016-09-07 | 2018-08-21 | 華碩電腦股份有限公司 | Charging-discharging module of the energy storage unit and charging-discharging method thereof |
| DE102017111946A1 (en) * | 2017-05-31 | 2018-12-06 | Epcos Ag | Electrical circuit and use of electrical circuit |
| US10073478B1 (en) * | 2017-10-09 | 2018-09-11 | Texas Instruments Incorporated | Voltage regulator for a low dropout operational mode |
| US11054850B2 (en) | 2018-04-24 | 2021-07-06 | WE CARE Solar | Portable solar power management system |
| CN111668911A (en) * | 2019-03-05 | 2020-09-15 | 富泰华工业（深圳）有限公司 | Power supply circuit and electronic device |
| KR102245969B1 (en) * | 2019-11-21 | 2021-04-29 | 연세대학교 산학협력단 | System and Method for Controlling Constant Power Generation of Photovoltaic System |
| WO2021161546A1 (en) * | 2020-02-15 | 2021-08-19 | 辻プラスチック株式会社 | Charging device using natural energy |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3909895A1 (en) * | 1989-03-25 | 1990-09-27 | Philips Patentverwaltung | CHARGING DEVICE FOR ELECTRICAL DEVICES OPERATED WITH ACCUMULATORS |
| JP2803991B2 (en) * | 1994-06-02 | 1998-09-24 | 株式会社多川商事 | Solar cell device and intermittent operation device using the same |
| JPH0833231A (en) * | 1994-07-14 | 1996-02-02 | Shigeo Yamamoto | Portable power supply with battery charger |
| JPH0879984A (en) | 1994-09-06 | 1996-03-22 | Ritsuku:Kk | Charging circuit |
| JPH0888027A (en) * | 1994-09-20 | 1996-04-02 | Omron Corp | Storage battery charging circuit and storage battery charger using this charging circuit |
| CN1065988C (en) * | 1994-10-06 | 2001-05-16 | 威廉·E·格列高列 | Lead acid battery rejuvenator and trickle charger |
| KR0173961B1 (en) * | 1996-06-24 | 1999-05-01 | 김광호 | Mode conversion type battery charging apparatus |
| JP3210278B2 (en) * | 1996-10-02 | 2001-09-17 | キヤノン株式会社 | Charging device and charging method |
| KR0182664B1 (en) | 1996-12-31 | 1999-05-15 | 삼성자동차주식회사 | Charging control apparatus of electric vehicle |
| JP2001045677A (en) * | 1999-07-29 | 2001-02-16 | Sekisui Chem Co Ltd | Power supplying device using solar cell |
| JP2002238182A (en) * | 2001-02-07 | 2002-08-23 | Kaga Component Kk | Power supply using solar battery |
| KR200273726Y1 (en) | 2002-01-31 | 2002-04-27 | 주식회사 이스퀘어텍 | portable charger using solar cell |
| JP2004064855A (en) * | 2002-07-26 | 2004-02-26 | Hayashiya:Kk | Power supply device using photoelectric cell |
| US20050045225A1 (en) * | 2003-09-02 | 2005-03-03 | Marantz Japan, Inc. | Apparatus for supplying standby power |
-
2004
- 2004-05-14 JP JP2004145705A patent/JP4133924B2/en not_active Expired - Fee Related
-
2005
- 2005-05-11 DE DE102005021821A patent/DE102005021821A1/en not_active Withdrawn
- 2005-05-11 TW TW094115198A patent/TWI273756B/en not_active IP Right Cessation
- 2005-05-12 US US11/127,296 patent/US7566828B2/en active Active
- 2005-05-13 KR KR1020050040020A patent/KR20060047861A/en not_active Application Discontinuation
- 2005-05-16 CN CNB2005100728698A patent/CN100384050C/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433501C (en) * | 2005-10-31 | 2008-11-12 | 东京科艺工程株式会社 | Solar energy type portable charger |
| US8653803B2 (en) | 2010-09-22 | 2014-02-18 | Yamaha Corporation | Voltage generation circuit |
| CN102419613A (en) * | 2010-09-22 | 2012-04-18 | 雅马哈株式会社 | Voltage generation circuit |
| CN102419613B (en) * | 2010-09-22 | 2014-04-30 | 雅马哈株式会社 | Voltage generation circuit |
| CN102005801A (en) * | 2010-12-30 | 2011-04-06 | 广东易事特电源股份有限公司 | Charging circuit of solar charging controller in common-ground structure |
| CN102005801B (en) * | 2010-12-30 | 2014-04-16 | 广东易事特电源股份有限公司 | Charging circuit of solar charging controller in common-ground structure |
| CN102723746A (en) * | 2011-03-30 | 2012-10-10 | 上海桥茵科贸有限公司 | Solar energy parallel-charging control system based on strategy |
| CN102801189A (en) * | 2011-05-26 | 2012-11-28 | 株式会社丰田自动织机 | Rechargeable battery power supply starter and cell balancing apparatus |
| CN102684655A (en) * | 2012-06-02 | 2012-09-19 | 乐清共拓电气科技有限公司 | Circuit for driving large-power load through small-power power supply |
| CN103051035A (en) * | 2013-01-25 | 2013-04-17 | 云南君和科技有限公司 | Full-range pulse-width modulation charging technology for photovoltaic power generation |
| CN104228708A (en) * | 2013-06-13 | 2014-12-24 | 爱信精机株式会社 | Opening and closing apparatus |
| CN104228708B (en) * | 2013-06-13 | 2019-04-19 | 爱信精机株式会社 | Opening and closing device |
| CN104467074A (en) * | 2014-11-10 | 2015-03-25 | 深圳市兴吉胜电子有限公司 | Super-capacitor power bank |
| CN105827003A (en) * | 2016-06-01 | 2016-08-03 | 广东小天才科技有限公司 | Mobile terminal charged through self power consumption heating |
| CN106160106A (en) * | 2016-08-04 | 2016-11-23 | 深圳市大能科技发展有限公司 | A kind of Wearable device based on solar cell for supplying power and method for designing |
| CN106160106B (en) * | 2016-08-04 | 2019-01-15 | 成都必盛科技有限公司 | A kind of wearable device and design method based on solar cell for supplying power |
| CN111806605A (en) * | 2019-12-31 | 2020-10-23 | 北京骑胜科技有限公司 | Method and device for adjusting system running state, storage medium and electronic equipment |
| CN116073502A (en) * | 2022-11-30 | 2023-05-05 | 东莞市仲康电子科技有限公司 | Vehicle-mounted power supply charger with solar MPPT |
| CN116073502B (en) * | 2022-11-30 | 2023-11-14 | 东莞市仲康电子科技有限公司 | Vehicle-mounted power supply charger with solar MPPT |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100384050C (en) | 2008-04-23 |
| US20050252546A1 (en) | 2005-11-17 |
| KR20060047861A (en) | 2006-05-18 |
| JP4133924B2 (en) | 2008-08-13 |
| US7566828B2 (en) | 2009-07-28 |
| TW200608666A (en) | 2006-03-01 |
| DE102005021821A1 (en) | 2006-02-16 |
| JP2005328662A (en) | 2005-11-24 |
| TWI273756B (en) | 2007-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1697282A (en) | Power source device and charge controlling method to be used in same | |
| KR101302541B1 (en) | Power extractor circuit | |
| US8013583B2 (en) | Dynamic switch power converter | |
| Liao et al. | Control strategy of bi-directional DC/DC converter for a novel stand-alone photovoltaic power system | |
| Liao et al. | A novel power management control strategy for stand-alone photovoltaic power system | |
| WO2007084196A2 (en) | Dynamic switch power converter | |
| Wang et al. | Energy management of stand-alone hybrid PV system | |
| US10090754B2 (en) | Photovoltaic inverter | |
| CN201663566U (en) | Wind and solar hybrid generation device with high output index | |
| Anandhi et al. | Application of DC-DC boost converter for solar powered traffic light with battery backup | |
| Musale et al. | Three level DC-DC boost converter for high conversion ratio | |
| CN116915169B (en) | Photovoltaic cell bypass circuit | |
| TWI502845B (en) | Photovoltaic system having burp charger performing concept of energy treasuring and recovery and charging method thereof | |
| Babu et al. | Design and implementation of low power smart pv energy system for portable applications using synchronous buck converter | |
| Nakayama et al. | Stand-alone photovoltaic generation system with combined storage using lead battery and EDLC | |
| Trivedi et al. | Smart solar charge controller for electric golf cart promoting green transportation | |
| CN103222181A (en) | Photovoltaic system | |
| Jain et al. | Solar home lighting system with AC and DC loads | |
| JP2018129980A (en) | Photovoltaic power generation system | |
| Chung et al. | A maximum power point tracking and voltage regulated dual-chip system for single-cell photovoltaic energy harvesting | |
| Chapman | Power management for energy harvesting devices | |
| CN100409537C (en) | Booster | |
| Bo et al. | Implementation of battery charging and discharging system in photovoltaic system | |
| Hsieh et al. | Energy management for interleaved PV stand-alone system with incremental conductance MPPT | |
| CN202218055U (en) | Intelligent controller of out-of-grid type wind-solar hybrid power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NEC ENERGY COMPONENTS CO., LTD. Free format text: FORMER OWNER: NEC TOKIN CORPORATION Effective date: 20120120 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120120 Address after: Kanagawa County, Japan Patentee after: NEC Energy Components Co., Ltd. Address before: Miyagi Prefecture in Japan Patentee before: NEC Tokin Corp. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Kanagawa County, Japan Patentee after: Vision AESC Energy Components Co., Ltd. Address before: Kanagawa County, Japan Patentee before: NEC Energy Components Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Power source device and charge controlling method to be used in same Effective date of registration: 20190821 Granted publication date: 20080423 Pledgee: Sumitomo Mitsui Banking Corporation Pledgor: Vision AESC Energy Components Co., Ltd. Registration number: Y2019990000102 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 Termination date: 20210516 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |